Agilent Technologies E8247C PSG CW - Manual (Page 29)

Chapter 1 19
Signal Generator Overview
Rear Panel
5. STOP SWEEP IN/OUT
This female BNC connector (Option 007 only) provides an open-collector, TTL-compatible input/output
signal that is used during ramp sweep operation. It provides low level (nominally 0V) output during sweep
retrace and band-cross intervals. It provides high level (nominally +5V) output during the forward portion of
sweep. Sweep stops when this input/output connector is grounded externally.
6. Z-AXIS BLANK/MKRS
This female BNC connector (Option 007 only) supplies a +5V (nominal) level during retrace and
band-switch intervals of a step, list, or ramp sweep. During ramp sweep, this female BNC connector
supplies a –5V (nominal) level when the RF frequency is at a marker frequency and intensity marker mode
is on. This connection is most commonly used to interface with an Agilent 8757D scalar network analyzer.
7. SWEEP OUT
This female BNC connector outputs a voltage proportional to the RF power or frequency sweep ranging
from 0 V at the start of sweep and goes to +10 V (nominal) at the end of sweep, regardless of sweep width.
The output impedance is less than 1
Ω
and can drive a 2 k
Ω
load.
When connected to an Agilent Technologies 8757D network analyzer, it generates a selectable number of
equally spaced 1 ms 10 V pulses (nominal) across a ramp (analog) sweep. The number of pulses can be set
from 101 to 1601 by remote control through the 8757D.
8. TRIGGER OUT
This female BNC connector, in step/list sweep mode, outputs a TTL signal that is high at the start of a dwell
sequence or when waiting for a point trigger in manual sweep mode. The signal is low when the dwell is
over or when a point trigger is received. In ramp sweep mode, the output provides 1601 equally-spaced 1
µ
s
pulses (nominal) across a ramp sweep. When using LF Out, the output provides a 2
µ
s pulse at the start of
LF sweep.
9. TRIGGER IN
This female BNC connector accepts a 3.3V CMOS signal that is used for point-to-point triggering in manual
sweep mode or a low-frequency (LF) sweep in external sweep mode. Triggering can occur on either the
positive or negative edge of the signal start. The damage level is
≤ −
4 V or
≥ +
10 V.
10. SOURCE SETTLED
This female BNC connector provides an indication when the signal generator has settled to a new frequency
or power level. A low indicates that the source has settled.